Combination lock



May 13, 1947. s.,s. KARAVIA COMBINATION u LOCK.

Filed April 10, 1945 FIG flG FIQ O A mm nu? M .M K. 323., S E o -M 0A O S 5 O d 5 5 `om G.

INVENTOR ATTORNEY Patented May 13, 1947 UNITED STATES PATENT GFFICE COMBINATION LQCK Sophie S. Karavia, New York, N. Y.

Application April 10, 1945, Serial No. 587,490

(Cl. lli-312) 7 Claims. l

My invention relates toy combination locks and has particular reference to locks Which do not require any keys for their locking and unlock- 1n'g-.

The main object of my invention is to provide a combination lock which can be used for handbags,A brief cases, and luggage of various types. An allied object of my invention is to provide a lock which can be used in connection with a keeper plate for the cover of a bag, the keeper plate being arranged to b'e'inserted into the lock and to be locked therein by turning locking elements of the lock.

Still another object of my invention is to provide a combination lock which willbe light, compact and reliable in its operation, having an attractive appearance and suitable for manufacturingfrorn plastic materials.

My invention 1s more fully described in the accompanying specification and drawings in which:

Fig; 1 isa sectional view of my lock in a locked position;

Fig. 2 is a similar view of the lock in an unlockedV position;

Fig. 3 is a front view of the lock;

Fig. 4' is a side view of the main body of the lock;

Fig. 5 is a front view lock;-

Fig. 6 isa detail view of oneV of the locking discs;

Fig. 'lf is' a front view of a locking bar;

Figi. 8 is a side View of the locking bar;

Fig. 9 is a front view of a keeper plate.

of the main body of the My combination lock comprises a flat base I l which may be of rectangular or other suitable shape. A disc-shaped projection 2 is formed on the base I and is provided with a slot 3 for a tongue 4T of a keeper plate 5. The base is providedwith holes IIJ for attaching to the side II of a bag, brief case or similar container as by rivets I2'. The keeper is also provided with holes I3 for rivets I4 with which it is attached to the side I5 of the cover of the bag. The keeper tongue has a slot I8 for the inner end I9 `oi a locking bar 2U. The bar is flat and slides in a slot 2l in av post 22" extending from the disc 2. The post 221 has circular portions 23, 24, 25 of progres` sively decreasing diameters, formingcircular shouldersv 26, 21, 281 The bar 20 has corresponding shoulders 30, 3|', 32 and a stem 33 at the top. Locking discs 35', 362, 3'I are rotatively mounted on the circular portions 2311,24, 25 and are providedl with slots 26 for the-bar` 20;- Thebar 20;

when moved inwards into a locking position as shown in Fig. 1, with the inner end I9 engaging the slot I8A in the keeper, the shoulders 3B, 3|, 32 are located inside the corresponding holes in the locking discs 35, 36, 3T, so that the latter can be freely rotated without interference from the locking bar. The locking bar i's at the same time retained in the locking position because each of its shoulders is held by the next disc having a smaller central hole. Thus the shoulder 30 of the locking bar is held by the edges of the next smaller disc 36 while the latter can rotate over the neXt smaller shoulder 3| of the bar.

The tcp of the post z2 extends slightly beyond the rotary discs and mounts a disc 40 of a smaller diameter than `the rotary discs. This disc is cemented or otherwise permanently secured to the top of the post 22 thereby retaining the rotary discs in their position on the post. The top disc has a central opening 4I for a helical spring 42 on the stem 33'. The inner end of the spring rests on a harige 43 at the end of the bore 4I. The outer end of the spring 42 is fitted in a bore 44 in a round cap 45 attached to the top end of the stem 33. The spring thus urges the locking bar 2D outwards into an unlocked position. The u'pper shoulder 32 for this purpose is made relatively low so that the bar can be moved by the spring outwards until the upper shoulder 32 engages the inner side of the small disc 4B. Such an unlocking position is possible for the bar 2li only when all three locking discs `are so placed that their slots register with the shoulders of the locking bar 20. The inner lug I9 of the locking bar is then removed from the slotv I8 of the keeper plate 5 allowing the latter to be withdrawn from the lock. For locking the keeper in the lock, after the tongue I9 of the keeper I8 has been inserted in the slot 3, the locking bar 2Q is moved inwards by pressing on the head of cap 45. The locking bar is then locked in this position by turning the discs, 35, 3B, 31 out of their unlocking position andholding the locking bar pressed inwards. until the discs have been so displaced.

To make it possible to place the discs in an unlocking position, the small disc 4l] is provided with marks or symbols 50. The upper rotary disc 3'! is also provided with similar symbols or numerals, and to bring the slot in the disc 31 in register with the upper shoulder on the locking bar 2t, by bringing certain symbols on the two discs in register. The second and third discs have no symbols but they are provided with pointer lugs 52 for bringing them in register with certain i symbols on the top discll The legs 52 maybe of different shape or color to distinguish them from each other.

The particular construction of my combination lock makes it especially suitable for being made of a plastic composition since it has no threaded parts, no screws or similar elements which are usually present in all metal locks.

My lock is also especially suitable for use with womens handbags, also with light luggage, including brief cases, overnight bags, etc.

It Will be understood that various features and principles of each of the embodiments of the invention above described or referred to may be utilized or substituted in the other embodiments.

While the invention has been described in detail with respect to certain particular preferred examples, it will be understood by those skilled in the art after understanding the invention, that various changes and further modiiications may be made without departing from the spirit and scope of the invention, and it is intended therefore in the appended claims to cover all such changes and modications.

What is claimed as new and desired to be secured by Letters Patent is:

1. A combination lock comprising a base plate arranged to be attached to the wall of a container; a raised member on the base plate with a slot extending from one side for a keeper, the keeper being provided with a slot; a post extending from the middle portion of the raised member, the post comprising cylindrical portions of progressively decreasing diameters, separated by shoulders; a plurality of rotary locking discs having central circular openings of progressively decreasing diameters corresponding to the diameters of the cylindrical portions of the central post; the central post having an axial longitudinal slot extending through the raised member; a locking bar slidably tted in the slot and having an extension at the inner end for engaging the slot in the keeper when the locking bar is moved inwards; a disc attached to the outer end of the post for retaining the rotary discs; the locking bar having a plurality of shoulders having radial distances from the axis of the locking bar corresponding to the radii of the central openings in the rotary discs, the locking bar being thereby retained in its operative position when moved inwards by the discs engaging by their inner edges of the central openings the next larger shoulders on the locking bar, the rotary discs having slots extending from the central openings for admitting the underlying inward shoulders thereby releasing the locking bar for moving outwards when the slots in the discs are registering with the locking bar.

2. A combination lock comprising a base plate arranged to be attached to the wall of a container; a raised member on the base plate with a slot extending from one side for a keeper, the keeper being provided with a slot; a post extending from the middle portion of the raised member, the post comprising cylindrical portions of progressively decreasing diameters, separated by shoulders; a plurality of rotary locking discs having central circular openings of progressively decreasing diameters corresponding to the diameters of the cylindrical portions of the central post; the central post having an axial longitudinal slot extending through the raised member; a locking bar slidably tted in the slot and having an extension at the inner end for engaging the slot in the keeper when the locking bar is moved inwards; a disc attached to the outer end of the post for retaining the rotary discs; the locking bar having a plurality of shoulders having radial distances from the axis of the locking bar corresponding to the radii of the central openings in the rotary discs, the locking bar being thereby retained in its operative position when moved inwards, by the discs engaging by their inner edges of the central openings the next larger shoulders on the locking bar, the rotary discs having slots extending from the central openings for admitting the underlying inward shoulders thereby releasing the locking bar for moving outwards when the slots in the discs are registering with the locking bar, the outer disc having a plurality of symbols, the rotary discs having projections at their peripheral portions for indicating the unlocking positions of the discs.

3. A combination lock comprising a base plate arranged to be attached to the wall of a container; a raised member on the base plate with a slot extending from one side for a keeper, the keeper being provided with a slot; a post extending from the middle portion of the raised member, the post comprising cylindrical portions of progressively decreasing diameters, separated by shoulders; a plurality of rotary locking discs having central circular openings of progressively decreasing diameters corresponding to the diameters of the cylindrical portions of the central post; the central post having an axial longitudinal slot extending through the raised member; a locking bar slidably tted in the slot and having an extension at the inner end for engaging the slot in the keeper when the locking bar is moved inwards; a disc attached to the outer end of the post for retaining the rotary discs; the locking bar having a plurality of shoulders having radial distances from the axis of the locking bar corresponding to the radii of the central openings in the rotary discs, the locking bar being thereby retained in its operative position when moved inwards, by the discs engaging by their inner edges of the central openings the next larger shoulders on the locking bar, the rotary discs having slots extending from the central openings for admitting the underlying inward shoulders thereby releasing the locking bar for moving outwards when the slots in the discs are registering with the locking bar, the outer disc having a plurality of symbols, the rotary discs being of approximately the same diameter and being provided with projections at their peripheral portions for indicating their positions relative to the symbols on the outer disc.

4. A combination lock comprising a base plate arranged to be attached to the wall of a container; a raised member on the base plate with a slot extending from one side for a keeper, the keeper being provided with a slot; a post extending from the middle portion of the raised member, the post comprising cylindrical portions of progressively decreasing diameters separated by shoulders; a plurality of rotary locking discs having central circular openings of progressively decreasing diameters corresponding to the diameters of the cylindrical portions of the central post; the central post having an axial longitudinal slot extending through the raised meming radial distances from the axis of the locking bar corresponding to the radii of the central openings in the rotary discs, the locking bar being thereby retained in its operative position when moved inwards, by the discs engaging by their inner edges of the central openings the next larger shoulders on the locking bar, the rotary discs having slots extending from the central openings for admitting the underlying inward shoulders thereby releasing the locking bar for moving outwards when the slots in the discs are registering with the locking bar; and means to yielda-bly urge the locking bar outwards.

5. A combination lock comprising a base plate arranged to be attached to the wall of a container; a raised member on the base plate with a slot extending from one side for a keeper, the keeper being provided with a slot; a post extending from the middle portion of the raised member, the post comprising cylindrical portions of progressively decreasing diameters, separated by shoulders; a plurality of rotary locking discs having central circular openings of progressively decreasing diameters corresponding to the diameters of the cylindrical portions of the central post; the central post having an axial longitudinal slot extending through the raised member; a locking bar slidably fitted in the slot and havingr an extension at the inner end for engaging the slot in the keeper when the locking bar is moved inwards; a disc attached to the outer end of the post for retaining the rotary discs; the locking bar having a plurality of shoulders having radial distances from the axis of the locking bar corresponding to the radii of the central openings in the rotary discs, the locking bar being thereby retained in its operative position when moved inwards by the discs engaging by their inner edges of the central openings the next larger shoulders on the locking bar, the rotary discs having slots extending from the central openings for admitting the underlying inward shoulders thereby releasing the locking bar for moving outwards when the slots in the discs are registering with the locking bar, the locking bar having a stem extending through a central opening in the outer discs; a cap at the end of the stem; and a spring on the stem between the disc and the cap for urging the locking bar outwards.

6. A combination lock comprising a base plate arranged to be attached to the Wall of a container; a raised member on the base plate with a slot extending from one side for a keeper, the keeper being provided with a slot; a post extending from one side for a keeper, the keeper being provided with a slot; a post extending from the middle portion of the raised member, the post comprising cylindrical portions of progressively decreasing diameters, separated by shoulders; a plurality of rotary locking discs having central circular openings of progressively decreasing diameters corresponding to the diameters of the cylindrical portions of the central post; the central post having an axial longitudinal slot extending through the raised member; a lockingbar slidably fitted in the slot and having an exten- 6 sion at the inner end for engaging the slot in the keeper when the locking bar is moved inwards; a disc attached to the outer end of the post for retaining the rotary discs; the locking ba-r having a plurality of shoulders having radial distances from the axis of the locking bar corresponding to the radii of the central openings in the rotary discs, the locking bar being thereby retained in its operative position when moved inwards, by the discs engaging by their inner edges of the central openings the next larger shoulders on the locking bar, the rotary discs having slots extending from the central openings for admitting the underlying inward shoulders thereby releasing the locking bar for moving outwards when the slots in the discs are registering with the locking bar, the outer shoulder on the locking bar being relatively low fer allowing the locking bar to be moved outwards when the discs are turned into unlocking positions.

7. A combination lock comprising a base plate arranged to be attached to the wall of a container; a raised member on the base plate with a slot extending from one side for a keeper. the keeper being provided with a slot; a post extending from the middle portion of the raised member, the post comprising cylindrical portions of progressively decreasing diameters, separated by shoulders; a plurality of rotary locking discs of approximately the same diameter and having central circular openings of progressively decreasing diameters corresponding to the diameters of the cylindrical portions of the central post; the central post having an axial longitudinal slot extending through the raised member; a lockingr bar slidably tted in the slot and having an extension at the inner end for engaging the slot in the keeper when the locking bar is moved inwards; a disc attached to the outer end of the post for retaining the rotary discs; the locking bar having a plurality of shoulders having radial distances from the axis of the locking bar corresponding to the radii of the central openings in the rotary discs, the looking bar being thereby retained in its operative position when moved inwards, by the discs engaging by their inner edges of the central openings the next larger shoulders on the locking bar, the rotary discs having slots extending from the central openings for admitting the underlying inward shoulders thereby releasing the locking bar for moving outwards when the slots in the discs are registering with the locking bar.

SOPHIE S. KARAVIA.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 517,729 Cable Apr. 3, 1894 2,015,660 Blumenfeld et al. Oct. 1, 1935 2,231,536 Karavia Feb. 11, 1941 

